Gate valve



Jan. 4,1927. 1,613,138

J. H. SEYMOUR ET AL GATE VALVE Filed July 20, 1926 2 Sheets-Sheet an 9 wW n \N R i U: N i I b m E L 9w k 3 E mw\ m m a N\ V\ WT m $N w w ww 2.\v m, Wm. H Hm W N\ t .3 Q i W\ 8% a. m T W p m g H d 1927 J. H.SEYMOUR ET AL GATE VALVE wuen ro'cs 1H SEYMOUR,

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flflozucg Filed July 20, 1926 2 Sheets-Sheet ects outwardly beyond thebolt 13.

valve'is in the form of a plate 17 and has.

Patented Jan. 4, 1 927.

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GATE VALVE.

Application filed July 20, 1920. Serial in. 123,764.

This invention relates to gate valves and it has for its object to provie an improved structure of this character of such a nature that when initsopened position the passage" throu h the valve will be fully openedand not 0 structed by any part of the valve mechanism.

While the gate valve of the present invention is of general applicationand is adapted for use in man relations it is of articular value indredging pipe lines and like places where regular gate valves can not beused. In dredging pipe lines and phosphate mine rock lines the excessiveamount of sand in the lines cuts the valves and gets into the groovewhere the gate works, making it imssible to close the valve.Consequently it as been found necessary to emplo blind gaskets in theselines to close them. primary object of the resent invention to provide agate valve w ich can be satisfactorily used under the conditionsrecited.

In the accompanying drawings- Fig. 1 is a side elevation of a valveconstructed in accordance with the invention.

Fig. 2 is a vertical sectional view there- .through.

Fig. 3 is a longitudinal face view of one half of the valve casing withthe valve removed.

Fig. 4 is an end elevation of the valve with the valve in open position.

Like numerals designate corresponding parts in all of the figures of thedrawing.

The valve casing comprises the two similar sections 5 and 6, carryingflanges as indicated at 7 and 8, to adapt them to be connected into apipe line. The confrontin faces of the sections are provided wi Iflanges 9'and 10, which carry the projecting portions 11 and 12. Theseprojectin portions are connected by a bolt 13, whic constitutes apivotal mounting for the hub 14 of the swinging valve 15. This valvecomrises the operating extension 16 which gripan opening 18 formedtherethrough to correspond in diameter to the bore 19 of the valve. Theextensions 11 and 12 are cut I away as indicated at 11 and 12' toprovide complete clearance for the valve between said extensions. Thevalve plate is pro.- vided with arcuate slots 20 and 21 and vca screws22 and 23 pass through slot 20 an cap screws 24 and 25' pass through slt 21.

tisthe' Cap screws 26 and are adapted to pass through openings 28 of theplate 17, only one of said openings being shown.-

The confrontingfaces of the flanges .9 and 10, are counterbored asindicated M129 and 30, for the receptipn of annular gaskets 31 and e2.vWhen the valve is to be moved with respect to the casing to open orclose the same, t e four ca screws 22,23, 24 and25 are loosened an thecap screws 26 and 27 are removed. Set screws 33 are tightened and thevalve is swung 'to its open orrclosed position as desired after whichset screws 33 are loosened; cap screws 26 and 27 are replaced and capscrews 22, 23, 24 and 25 are tightened. Set screws 33 act merely asthrust elements to force the sections 5 and 6 slightly apart and torelieve pressure on the 'valve and permit it tomove easily.

Thus it will be seen that the valve of the. present invention comprises,in eifect, a two part casinghavmg a swinging valve plate operating terebetween together with means for drawing the two parts of the easinginto forceful engagement with said plate, after the latter has beenmoved to its open or closed position to thereby bind the two parts ofthe casing u on the valve plate and to effeet a fluid tig t jointbetween these parts. A'structure 0 this nature will operatesatisfactorily to quickly open or close a line of pipe no matter howmuch sand or other foreign matter may be carried therein. In thisrespect it is superior to anything with which we are familiar.

, It is to be understood that the invention is not limited to theprecise construction set forth but that it includes within its urviewwhatever changes come within eit er the terms or the spirit of theappended claims.

Having described our invention what we claim is:

1. A structureof the character described comprising a pair of valvecasing sections, a valve plate mounted to swing therebetween havin an oening formed therein adapted to a gn wit the bore of the valve casingsections, arcuate slots formed in said valve plate and draw boltstraversing the valve casing sections for drawin them to-' ward eachother, said draw bo tspassing throu h said arcuate slots.

2. structure as recited in claim 1 in combination with additional drawbolts which pass through thevalve casing seccomprisinga pair of valvecasing sections,

a valve plate mounted to swing therebetween havin an opening formedtherein adapted. to align-with thebore of the valve casing sections,arcuate slots formed in said valve plate and draw bolts traversing thevalve casing sections for drawing them toward each other, said drawbolts passingv 5 through said arcuate slots, portions carried by thevalve casing sections and extending laterally beyond the line of thevalve cas- 1 ing sections, a pivot for the valve plate carried by saidportions and an actuating lever formed of an extension of the valveplate beyond said pivot.

In testimony whereof they afiix their sig- N natures;

JULIUS H. SEYMOUR. THOMAS S. SPEAR.

